Read Sharp DV-NC60H (serv.man54) Technical Bulletin online
VCR2002 08 01
Month of Issue:
August 2002
Classification:
White
VIDEO TECHNICAL BULLETIN
Page 1 of 3
Sharp Electronics (UK) Limited
Reference AVW02082002-2
Revision 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
MODELS
DVNC55H
DVNC60H
SYMPTOM
The EEPROM setting procedure is missing from the service manual.
ACTION
To set the EEPROM, follow the instructions on the following pages.
EEPROM (IC705) Replacement Procedure
When replacing the EEPROM (IC705) it is necessary to reprogram it, this is because it is supplied blank, i.e. it contains
no data. Depending upon the model type, the EEPROM will have to be programmed with different data as follows:
no data. Depending upon the model type, the EEPROM will have to be programmed with different data as follows:
1. The EEPROM has a number of locations (JP0 to JP39) that contain data to control the functionality of the
machine, i.e. weather the unit has long play, PDC function etc. These locations can only be set to either a ‘1’ or
a ‘0’. As the values contained within the EEPROM varies between units, a table is provided on the following
page, detailing model types and JP data.
a ‘0’. As the values contained within the EEPROM varies between units, a table is provided on the following
page, detailing model types and JP data.
2. In addition to the above, the recording pre-set levels will also have to be entered.
3. It is also necessary to readjust the servo slow and still modes
How to reprogram the JP locations
First enter the test mode:
1. Ensure the VCR is in the standby mode.
2. Connect a shorting link between TP5101 and TP5103.
3. Remove the shorting link.
4. The display will change to JP0; this may be static or flashing.
2. Connect a shorting link between TP5101 and TP5103.
3. Remove the shorting link.
4. The display will change to JP0; this may be static or flashing.
To move between the JP locations, press the CHANNEL (+) or CHANNEL (-) buttons on the front of the VCR. Note that
the channel change buttons on the remote control will have no effect.
To change the JP locations to a ‘0’, press the CLEAR button on the remote control (JP number will be static)
To change the JP locations to a ‘1’, press the DISPLAY button on the remote control (JP number will flash)
the channel change buttons on the remote control will have no effect.
To change the JP locations to a ‘0’, press the CLEAR button on the remote control (JP number will be static)
To change the JP locations to a ‘1’, press the DISPLAY button on the remote control (JP number will flash)
After programming, a quick check can be made to see if the data has been entered correctly. On the data table, the
number shown next to JP under the OSD heading indicates a checksum, which can be used for this purpose. As this is
a ten-figure number it cannot be displayed all at the same time, therefore it has to be done in two parts.
number shown next to JP under the OSD heading indicates a checksum, which can be used for this purpose. As this is
a ten-figure number it cannot be displayed all at the same time, therefore it has to be done in two parts.
To display the lower seven digits press the FF button on the remote control
To display the upper three digits press the STOP button on the remote control
To display the upper three digits press the STOP button on the remote control
VCR2002 08 01
Month of Issue:
August 2002
Classification:
White
VIDEO TECHNICAL BULLETIN
Page 2 of 3
Sharp Electronics (UK) Limited
Reference AVW02082002-2
Revision 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
How to reprogram the recording pre-set levels
1. Enter the test mode as shown above.
2. Press the CHANNEL (+) or CHANNEL (-) buttons until the tape speed indicator is lit (either SP, LP or EP). The
2. Press the CHANNEL (+) or CHANNEL (-) buttons until the tape speed indicator is lit (either SP, LP or EP). The
display will read either n or p (NTSC or PAL), first digit next to this letter represents luminance preset number,
the second, the chrominance preset level. See below
the second, the chrominance preset level. See below
Sp
P
3
5
Luminance preset level
Tape speed
Chrominance preset level
System
3. To change the values, press the number keys on the remote control. In the above example the keys ‘3’ then ‘5’
would be pressed to give ‘35’. Note that only numbers 0 to 7 can be entered.
4. When the first system/tape speed levels have been set, press the CHANNEL (+) or CHANNEL (-) buttons on
the front of the unit to move onto the other levels.
5. When complete, short-circuit the test points TP5101 and TP5103 to exit the test mode.
DVNC55HM and DVNC60HM EEPROM Setting Code Table
EEPROM JUMPER
REC CURRENT JUMPER
Position
JP set
Position
Y
C
JP0
0
SP
P
4
6
JP1
0
LP
P
2
3
JP2
1
SP
N
0
7
JP3
0
EP
N
0
7
JP4
0
JP5
1
OSD
JP6
0
JP7
0
JP
42BB7E5223
JP8
1
YC
46230707
JP9
1
VM
JP10
0
NOR
JP11
1
JP12
1
JP13
1
JP14
0
VCR2002 08 01
Month of Issue:
August 2002
Classification:
White
VIDEO TECHNICAL BULLETIN
Page 3 of 3
Sharp Electronics (UK) Limited
Reference AVW02082002-2
Revision 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
EEPROM JUMPER
Position
JP set
JP15
1
JP16
1
JP17
1
JP18
1
JP19
0
JP20
0
JP21
1
JP22
1
JP23
1
JP24
1
JP25
0
JP26
1
JP27
0
JP28
0
JP29
1
JP30
0
JP31
0
JP32
0
JP33
1
JP34
0
JP35
0
JP36
1
JP37
1
JP38
0
JP39
0
